15479484640 has 48 divisors (see below), whose sum is σ = 38721482352. Its totient is φ = 5827569664.

The previous prime is 15479484617. The next prime is 15479484659. The reversal of 15479484640 is 4648497451.

It is a happy number.

It is a super-2 number, since 2×15479484640² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2842774 + ... + 2848213.

It is an arithmetic number, because the mean of its divisors is an integer number (806697549).

Almost surely, 2^15479484640 is an apocalyptic number.

15479484640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15479484640 is an abundant number, since it is smaller than the sum of its proper divisors (23241997712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15479484640 is a wasteful number, since it uses less digits than its factorization.

15479484640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691019 (or 5691011 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 15479484640 in words is "fifteen billion, four hundred seventy-nine million, four hundred eighty-four thousand, six hundred forty".